Last name Добай (Dobai 
, Dobay , Добай 
) , across the world, is quite a common surname. The cognomen Добай is characteristic of Eastern Europe, particularly Hungary, where it is quite a common surname, Romania, where it is quite a rare surname, and Slovakia. Measured by absolute frequency, this name is the most popular in Hungary, Romania, and India. Much less frequently, Добай is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dobai, Dobay | Romania, Algeria, Hungary, United States, India |
| Добай | Kazakhstan, Ukraine, Russia |
| добай, адильхан KZ |
|